Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 89, NWS Shreveport, LA

November 8, 2011Nacogdoches County, Panola County, Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at Nov 8, 2011, 3:21 PM CST for Nacogdoches County, Panola County, Rusk County, Texas. It was in force for 24 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Nov 8, 2011, 3:21 PM CST (21:21 UTC)
Expired: Nov 8, 2011, 3:45 PM CST
In force: 24 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Nacogdoches County, TX, Panola County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 101 km from the middle of the area, began a volume at 21:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Nov 8, 3:34 PM CST	TORNADO	3 W Mount Enterprise, TX	A TORNADO TOUCHED DOWN 3 MILES WEST OF MOUNT ENTERPRISE AND CONTINUED ON TO THE NORTHEAST...KNOCKING DOWN TREES...RIPPING OFF LARGE LIMBS OF TREES...AND TEARING THE TOPS OFF OF OTHER TREES. IT FINALLY LIFTED 4 MILES TO THE NORTHEAST OF MOUNT ENTERPRISE. IT WAS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 8, 10:49 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.4 hours before the alert went out and 110 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 12 J/kg
Mixed-layer CIN: -185 J/kg
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

219 
WFUS54 KSHV 082121
TORSHV
TXC347-365-401-082145-
/O.NEW.KSHV.TO.W.0089.111108T2121Z-111108T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
321 PM CST TUE NOV 8 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN NACOGDOCHES COUNTY IN EASTERN TEXAS...
  EXTREME SOUTHWESTERN PANOLA COUNTY IN NORTHEAST TEXAS...
  SOUTHERN RUSK COUNTY IN NORTHEAST TEXAS...

* UNTIL 345 PM CST

* AT 318 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 15 MILES
  SOUTHWEST OF MINDEN...OR 18 MILES EAST OF RUSK...MOVING NORTHEAST
  AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GLENFAWN...LANEVILLE...MOUNT ENTERPRISE AND LAWSONVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3191 9493 3211 9467 3195 9451 3194 9451
      3179 9480
TIME...MOT...LOC 2121Z 228DEG 33KT 3187 9482

$$

23

1 follow-up statement

938 
WWUS54 KSHV 082137
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
337 PM CST TUE NOV 8 2011

TXC347-365-401-082147-
/O.EXP.KSHV.TO.W.0089.000000T0000Z-111108T2145Z/
NACOGDOCHES TX-PANOLA TX-RUSK TX-
337 PM CST TUE NOV 8 2011

...THE TORNADO WARNING FOR RUSK...PANOLA AND NACOGDOCHES COUNTIES
WILL EXPIRE AT 345 PM CST...

LAT...LON 3191 9493 3211 9467 3195 9451 3194 9451
      3179 9480
TIME...MOT...LOC 2137Z 228DEG 33KT 3197 9469

$$

23

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 8, 1:13 PM CST	Tornado Warning	SHV	Cherokee, Nacogdoches	32 min
Nov 8, 1:43 PM CST	Tornado Warning	SHV	Nacogdoches, Rusk	47 min
Nov 8, 1:47 PM CST	Severe Thunderstorm Warning	SHV	Camp, Franklin, Smith, Upshur, Wood	58 min
Nov 8, 2:14 PM CST	Tornado Warning	SHV	Smith, Upshur, Wood	31 min
Nov 8, 2:27 PM CST	Tornado Warning	SHV	Panola, Rusk, Shelby	11 min
Nov 8, 2:36 PM CST	Tornado Warning	SHV	Smith	11 min
Nov 8, 2:42 PM CST	Tornado Warning	SHV	Smith, Upshur	21 min
Nov 8, 3:00 PM CST	Severe Thunderstorm Warning	SHV	Cherokee, Gregg, Rusk, Smith	45 min
Nov 8, 3:02 PM CST	Severe Thunderstorm Warning	SHV	Camp, Cass, Gregg, Harrison, Marion, Morris and 1 more	43 min
Nov 8, 3:58 PM CST	Severe Thunderstorm Warning	SHV	Panola, Shelby	47 min
Nov 8, 4:30 PM CST	Tornado Warning	SHV	Panola, Shelby	30 min

Nearby

Tornado Warnings in Texas, 2011 Every tornado warning in 2011 Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.